Refrigerating device



May 10, 1932. A M. CROSLEY 1,857,439

REFRIGERATING DEVICE 7 Filed Nov. 19, 1928 ATTORNEY.

Patented May 10, I932 [TED STATES LEWIS M. CROSLEY, OF CINCINNATI, OHIO,ASSIGNOR TO THE CROSLEY RADIO COR- IORATION, OF CINCINNATI, OHIO, ACORPORATION OF OHIO REFRIGERATING DEVICE Application filed November 19,1928. Serial No. 320,312.

My invention relates to the use of retarding devices for use withabsorption refrigeration systems, particularly those which requireremoval of the refrigeration unit from the refrigerator for purposes ofregeneration.

In the absorption system of refrigeration it is an advantage to effectgeneration as rapidly as possible, and refrigeration as slowly aspossible, to maintain the required temper in the refrigerator (but Wherethe outside temperature is high, it helps to maintain a pressuredifferential, which, if not present, might result in the pressure in theabsorber building up sufiiciently to prevent absorption.

Thus, in the very hot desert regions of this country, absorption systemshave not been successful because of the premature striking of a balanceof pressures due to the high heating of the generator-absorber.

Among other objects of my invention is providing as a preferred type ofretarder a device containing a brine, which brine becomes quite cold,and during the period when generation is taking place, will keep theinterior of the box from rising too high. In systems requiring removalof the unit, this is particularly valuable.

I have devised a retarder which is mechanically arranged for use quiteconveniently with the refrigeration unit of David Forbes Keithsapplication for Letters Patent Serial No. 201,904, filed June 27th,1927. Thus, the construction and mode of support is such as to take careof inaccuracies of adjustment and still properly insulate and retard theevaporation in the cold ball.

The above and other advantages accomplished by my invention areexemplified in the construction shown and described in the followingsubject matter.

In the drawings 2-- Figure 1 is a sectional View of a refrigeratorshowing my invention in use.

Figure 2 is a perspective of a brine tank used as a retarder.

I have indicated a refrigerator cooling box 1, which has a lid 2 and aslot in the side wall of the box as at 3, for retaining therefrigeration unit in place.

The unit selected for illustration has a generator-absorber chamber orball 4, and a condenser-evaporator chamber or ball 5. The two areconnected by a tubular casing 6, which serves to enclose all connectionsbetween the two balls, and when the device is in use is set into thereceiving slot in the side wall of the box, whereupon the lid can beclosed down over it, leaving the condenser-evaporator within the box.

A preferred type of retarder, which is illustrated, is in the form of arectangular vessel 7, with one curved side, having soldered into the topthereof a hemispherical enclosing plate 8. A fitting 9 in the top of thevessel serves for filling it with brine or other non-freezing fluid.

In order to expose the ice drawer in the condenser-evaporator ball, thehemispherical top plate and the side wall of the vessel are cut away anda piece inserted as at 10, to form a notch in the vessel which willexpose the drawer.

The shape of the vessel top will be such as to receive thecondenser-evaporator shell.

It happens that in the particular condenserevaporator ball shown, thereis a hood 11 supported on the ball, serving as a water circulation shellaround the upper half of the ball during the condensation portion of thecycle of the device. The shape of the vessel top is such as to permitthis hood to come down close to the top of the vessel.

In an instance wherein the condenserevaporator carries no hood, it maybe desirable to drop a hood over the ball or casing to impartadditional, insulation thereto.

The vessel is in the preferred form of device, supported on feet formedof short posts Instead of filling the retarder with brine or someelement to retain the cold, partial results can be gained by merelyproviding the vessel itself, or a hood, omitting the feet,

which rests on the base of the box and respherical top closure platewould be omitted,

and the retarding would be due to the elimination of a large part of theair circulation around the ball.

Of course, the shape of the vessel and its top plate, or the shape of anenclosing hood or the like, will be so arranged as to take whatevershape of refrigeration unit as may be employed and I donot wish to limitmyself to a device which will take a ball since the invention hasbroader aspects.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is v 1. In an absorption system refrigerationdevice comprisingga cooling box and a removable unit having, wheninstalled with the cooling box, a generator-absorber outside the coolingbox, and a 'gcondenser-evaporator inside t-he cooling box, solidsurfaced means Within the box for retarding absorption of heat by saidcondenser-evaporator.

2.In anabsorption system refrigeration device comprising a cooling boxand a removable unit having, when installed with the cooling box, agenerator-absorber outside the cooling box, and an internalcondenserevaporator inside the cooling box. means within the box forretarding absorption of heat by said condenser-evaporator, said meanscomprising a closed shell surrounding said condenser evaporatoratleastin part.

3. In an absorption system refrigeration device comprising acooling boxand a removable unit having, when installed with the cooling box, agenerator-absorberoutside thecooling box, and an internalcondenserevaporator inside the cooling box,1 means within the box forretarding absorption of heat by said condenser-evaporator, said meanscomprising a closed'container within which a substance retentive of coldis held.-

4. In an absorption system refrigeration device comprising a cooling"box and a removable unit having, when installed with the cooling box, agenerator-absorber outside the cooling box, and an internal condenser-'evaporator inside the cooling box, means stantial portion of the saidcondenser-evapo- I r'ator. r

LEWIS M. CROSLEY.

